Battery Cell Jig for Horizontal Lead Clamping and Force Control
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Solution Overview
Problem
Existing battery cell evaluation apparatuses face challenges in consistently applying uniform force to electrode leads due to variations in adhesion and difficulty in maintaining a horizontal connection, leading to unreliable evaluation results.
Innovation Solution
A battery cell evaluation apparatus with a jig featuring a first elevation adjustment member to control the pressing force and a die unit for adjusting the height of the battery cell or jig, ensuring the electrode lead is fastened horizontally, using a torque wrench for precise force measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a screw mechanism is used to move the upper member, then the structure is simple, but uniform force cannot be controlled consistently by different operators
Solution Approach 1:
The patent changes the control parameter from manual screw rotation (difficult to standardize) to direct pressing force application (easy to standardize). The pressing member is designed to apply force directly to the electrode lead with a predetermined pressing force, eliminating the need for operators to control force through screw rotation. This resolves the contradiction by making force control consistent while keeping the overall structure relatively simple.
Solution Approach 2:
The patent replaces the screw mechanism (mechanical system requiring operator skill) with a direct pressing mechanism that applies force more consistently. The pressing member with pressing contact surface provides more reliable force transmission compared to the screw-based upper member movement, improving ease of operation without significantly increasing complexity.
2Adaptability or versatility
If the jig structure is fixed, then the device complexity is low, but it cannot accommodate battery cells with various capacities and sizes
Solution Approach 1:
The patent introduces dynamic adjustability to the jig structure. The pressing member can be positioned at different locations along the electrode lead, and the pressing force can be adjusted to accommodate battery cells with various capacities and sizes. This dynamic capability allows the same jig to adapt to different battery types without requiring multiple specialized jigs, resolving the contradiction between versatility and complexity.
Solution Approach 2:
The jig is designed with universal features that allow it to handle multiple battery cell types. The pressing member and holder unit can accommodate different electrode lead configurations and battery sizes through adjustable positioning, making a single jig structure capable of performing multiple functions across different battery capacities.
3Shape
If the electrode lead is fastened without height adjustment, then the device complexity is low, but the electrode lead cannot be kept horizontal when battery volume changes
Solution Approach 1:
The patent implements height adjustability in the pressing member to maintain proper electrode lead alignment. The pressing member can be positioned at different heights to accommodate battery cells with varying volumes, ensuring the electrode lead remains horizontal during connection. This dynamic adjustment capability resolves the contradiction between maintaining proper shape/alignment and avoiding excessive device complexity.
Data Source
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AI summary
Disclosed is a battery cell evaluation apparatus, and more particularly a battery cell evaluation apparatus including a jig, the jig including: a housing including a cavity; a holder unit received in the cavity, the holder unit including a first connection member and a second connection member each configured to fix an electrode lead of a battery cell; and a first elevation adjustment member configured to adjust the height of the second connection member, wherein the first elevation adjustment member is configured to measure a pressing force of the second connection member when the second connection member and the first connection member are in tight contact or the second connection member and the electrode lead are in tight contact.